Paper-maker&#39;s stuff-chest.



Patented Nov. 25, I902.

F. wLnm-zuuev. PAPER MAKER'S STUFF CHEST.

(Application filed. May 17, 1902,]

(No Modal!) .A w. y m

UNITED STATES PATENT OFFICE.

FRED WARREN MOKENNEY, OF LISBON FALLS, MAINE.

.PAPER-MAKERSSTU FF-CH EST.

SPECIFICATION forming part of Letters Patent No. 714,391, dated November 25, 1902. Application filed May 17, 1902.. $erial No. 107,853. (No model.)

To c'tZZwhom it may concern.-

Be it known that I, FRED WARREN McKEN- NEY, a citizen of the United States, residing at Lisbon Falls, in the county of Androscoggin and State of Maine, have invented anew be of superior quality on account of its uniformity in character.

With these and other objects in view, as will appear asthe nature of the invention is better understood, the same consists int'he novel construction and combination of parts of a paper-makers stuff-chest, as will be hereinafter fully described and claimed.

In the accompanying drawings, forming a part of thisspeeification, and in which like numerals of reference indicate corresponding parts, there is illustrated one form of embodiment of the invention capable of carrying the same into practical operation, it being understood that the elements therein exhibited may be varied or changed as to shape, proportion, and exact manner of assemblage without departing from the spirit thereof, and in these drawings t Figure 1 is a View in plan, partly in section, of a machine constructed in accordance with the present invention. Fig. 2 is a view in transverse section.

Referring to the drawings, 1 designates the chest or tank, the same being a rectangular structure of any desired length and width and divided into two semicircular-bottomed chambers 2 and 3, separated by a partition 4, that terminates short at each end of the chest, as shown in Fig. 1, in order to permit a continual circulation around and around the chest, the ends of the partition where they merge into the bottoms being curved, as at 5, to obviate the presentation of an obstruction to the free passage of the stock in its circular movement.

Arranged longitudinally of each chamber and supported in suitable hearings in the end walls ofthe chest are two shafts 5 and 6, each of which carries a plurality of heater or stirrer arms 7, alternately disposed at right angles to each other. These heaters are disposed diagonally to their shafts, and the disposition of the boaters on one shaft is opposite to that on the other, whereby under 1'0- tation the heaters in one chamber propel the stock to the rear of the chest and those in the other chamber propel it to the front, thereby keeping up a continuous circulation ofthe stock throughout the entire chest. As is well known, there isa tendency in all paper-stock for the heavier portions thereof to sink to the bottom of the chest and for a considerable quantity of it to bank up in the corners at the respective ends of the chest. To obviate this defect, at one end of each of the shafts, close to the end and opposite the passage-way between the two chambers, there is affixed a stirrer or lifter 8, the arms of which are dis posed parallel with their shafts. It will be seen by reference to Fig. 1 that when the stockin chamber 2 reaches the rear end thereof the lifter at that point will pick up the stock and force it over into the chamber 3, cleanly removing all of the stock at that point, and

the stirrer opposite the lifter just described will immediately start to impart an onward movement to the stock until it reaches the rear end of the chamber 3, when the lifter at that end will operate in the manner described to force the stock back into the chamber 2.

As will be seen by reference to Fig. 2, the stirrers and lifters work close to the bottom, sides, and ends of the chambers, and thereby positively prevent the accumulation of any heavy stock at those points.

Each shaft carries exteriorly of one end a gear-wheel 9, which meshes with a pinion 10, carried by a shaft 11, having mounted upon it a pulley 12, around which passes a belt to a suitable source of power. (Not necessary to be shown.)

The chest is provided with a cover 13, having longitudinal openings 14, through which stock may be fed to the chest and through which it may he removed.

It is to be understood that instead of having both of the chambers and the agitating and lifting means therein of the same dimensions there may be a difference in the proportion of the parts-that is to say, one of the chambers and its contained mechanism may be smaller than the other-and as this will be readily understood detailed illustration thereof is deemed unnecessary.

The operation of the machine of this invention will be thoroughly effective in preventing the output of paper-stock of different weights-that is to say, heavy and light from the same materials-as by reason of the constant and thorough agitation and mixture of the stock the desired consistency of the stock may readily be maintained.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A paper-makers stud-chest provided with communicating chambers, means disposed within the chambers for effecting circulation of paper-stock from end to end thereof, and means disposed at one end of a chamber for lifting the stock and forcing it into the opposite chamber.

2. A paper-makers stuff-chest provided with communicating chambers, means disposed within the chambers for effecting circulation of the paper-stock from end to end thereof, and means disposed at one end of each of the chambers for liftingthe stock and forcing it into the opposite chamber.

3. A paper-makers stuff -chest provided with a plurality of circular-bottomed chambers separated throughout a greater portion of their length, and circulating and lifting means arranged within each chamber.

4:. A papermakers stuff-chest provided with a plurality of circular-bottomed chambers communicating with each other at their ends, and a driven shaft disposed within each chamber and provided with circulating and lifting means.

5. A paper-makers stuff -chest provided with a plurality of circular-bottomed chambers, a partition dividing the chambers and terminating short of the ends thereof to present passage-ways, the ends of the partition being rounded to assist circulation, a rotatable shaft disposed within each chamber and bearinga plurality of stirrers disposed in such manner as to efiect opposite movement of the material within the chambers, and lifting means carried by the shafts and disposed opposite the passage-ways.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.

FRED WARREN MoKENNEY.

Witnesses:

CHAS. F. HACKETT, PERCY L. DOWNS. 

